Valková Veronika, Ďúranová Hana, Falcimaigne-Cordin Aude, Rossi Claire, Nadaud Frédéric, Nesterenko Alla, Moncada Marvin, Orel Mykola, Ivanišová Eva, Chlebová Zuzana, Gabríny Lucia, Kačániová Miroslava
AgroBioTech Research Centre, Slovak University of Agriculture, Tr. A. Hlinku 2, 94976 Nitra, Slovakia.
Enzyme and Cell Engineering, UPJV, CNRS, Université de Technologie de Compiègne, Centre de Recherche Royallieu-CS 60319-60 203 CEDEX, 60200 Compiègne, France.
Foods. 2022 Jul 29;11(15):2267. doi: 10.3390/foods11152267.
The study compares the impact of freeze- and spray-drying (FD, SD) microencapsulation methods on the content of β-glucan, total polyphenols (TP), total flavonoids (TF), phenolic acids (PA), and antioxidant activity (AA) in commercially β-glucan powder (Pleurotus ostreatus) using maltodextrin as a carrier. Morphology (scanning electron microscopy- SEM), yield, moisture content (MC), and water activity (aw) were also evaluated in the samples. Our examinations revealed significant structural differences between powders microencapsulated by the drying methods. As compared to non-encapsulated powder, the SD powder with yield of 44.38 ± 0.55% exhibited more reduced (p < 0.05) values for aw (0.456 ± 0.001) and MC (8.90 ± 0.44%) than the FD one (yield: 27.97 ± 0.33%; aw: 0.506 ± 0.002; MC: 11.30 ± 0.28%). In addition, the highest values for β-glucan content (72.39 ± 0.38%), TPC (3.40 ± 0.17 mg GAE/g), and TFC (3.07 ± 0.29 mg QE/g) have been detected in the SD powder. Our results allow for the conclusion that the SD microencapsulation method using maltodextrin seems to be more powerful in terms of the β-glucan powder yield and its contents of β-glucan, TP, and TF as compared to the FD technique.
本研究比较了冷冻干燥（FD）和喷雾干燥（SD）微胶囊化方法对以麦芽糊精为载体的市售β-葡聚糖粉（平菇）中β-葡聚糖、总多酚（TP）、总黄酮（TF）、酚酸（PA）含量及抗氧化活性（AA）的影响。还对样品的形态（扫描电子显微镜-SEM）、产率、水分含量（MC）和水分活度（aw）进行了评估。我们的检查揭示了通过干燥方法微胶囊化的粉末之间存在显著的结构差异。与未微胶囊化的粉末相比，产率为44.38±0.55%的SD粉末的aw（0.456±0.001）和MC（8.90±0.44%）值比FD粉末（产率：27.97±0.33%；aw：0.506±0.002；MC：11.30±0.28%）更低（p<0.05）。此外，在SD粉末中检测到β-葡聚糖含量（72.39±0.38%）、总酚含量（TPC，3.40±0.17mg GAE/g）和总黄酮含量（TFC，3.07±0.29mg QE/g）的最高值。我们的结果表明，与FD技术相比，使用麦芽糊精的SD微胶囊化方法在β-葡聚糖粉产率及其β-葡聚糖、TP和TF含量方面似乎更有效。
